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Effects of Quenching Medium on the Microstructures and

Wenqing Liu's research works Shanghai University

Wenqing Liu's 6 research works with 34 citations and 364 reads,including Investigation of hierarchical precipitation on bimodal-grained austenite and mechanical properties in quenching The effect of solution heat treatment and quenching rates Four common AlSiMg foundry alloys have been solution heat treated at 813 K,quenched,and immediately aged at 423 K for up to 240 minutes.The mechanical properties are found to be related to the amount of Mg and Si in the alloys.A high strength is obtained after only 60 minutes of solution heat treatment,indicating that the solid solution is rapidly saturated on Mg and Si.The Effect of Nb on the Microstructures and Hardness of Nb-free and Nb-bearing medium carbon steels treated by quenching-partitioning-tempering process were investigated.The microstructural observations and hardness were analyzed by optical microscope,transmission electron microscope,X-ray diffraction and hardness test.Results show that when quenched at 210oC and partitioned at 450oC ultra fine-grained microstructures of martensite,retained

Steel - Effects of heat-treating Britannica

Steel - Steel - Effects of heat-treating Adjusting the carbon content is the simplest way to change the mechanical properties of steel.Additional changes are made possible by heat-treatingfor instance,by accelerating the rate of cooling through the austenite-to-ferrite transformation point,shown by the P-S-K line in the figure.(This transformation is also called the Ar1 transformation Sparrho Effect of step quenching on microstructures and Quenching and tempering (QT) and intercritical quenching and tempering (IQT) was also conducted as controls.Besides,Effects of austenitizing temperature for the different treatment routes on microstructural characteristics and mechanical properties were also investigated.Sparrho Effect of step quenching on microstructures and Quenching and tempering (QT) and intercritical quenching and tempering (IQT) was also conducted as controls.Besides,Effects of austenitizing temperature for the different treatment routes on microstructural characteristics and mechanical properties were also investigated.

Previous123456NextEffect of Cooling Rate on the Microstructure and

May 02,2016 Effects of Quenching Medium on the Microstructures and#0183;Medium carbon steel is being widely used for machinery structural parts.The microstructure,tensile and impact behaviour of a commercial medium carbon forging steel (AISI 1035) have been determined before and after forging with respect to different cooling conditions in a hydraulic press at 950 Effects of Quenching Medium on the Microstructures and#176;C.Final microstructures and mechanical properties were evaluated by opticalMicrostructure,tensile and toughness properties after Jan 01,2013 Effects of Quenching Medium on the Microstructures and#0183;The effect of different microstructures on the tensile and toughness properties of a low alloy medium carbon steel (0.28C1.4Si0.67Mn1.49Cr0.56Mo wt%) was investigated,comparing the properties obtained after the application of selected quenching and partitioning (QP) and quenching and tempering (QT) treatments.Effects of hot/cold deformation on the microstructures and The mechanical properties and designed microstructure evolution have been investigated in ultra-low carbon medium Mn steels for enhanced strength,plasticity and toughness,after an innovative quenching-partitioning-tempering (QPT) treatment with different initial

Effects of annealing temperature and quenching medium

Jan 23,2017 Effects of Quenching Medium on the Microstructures and#0183;In this research,the effects of annealing temperature and quenching medium on microstructure,mechanical properties as well as high cycle and low cycle fatigue behavior of Ti-6Al-4V were investigated.Four types of different heat treatments consisting annealing at 930 Effects of Quenching Medium on the Microstructures and#176;C and 970 Effects of Quenching Medium on the Microstructures and#176;C followed by air cooling or water quenching were considered.Effects of Spray Forming and Aging Treatment on the The microstructures and hardness of spray-formed and aged H13 steel were investigated by OM,SEM,XRD and hardness tester.Compared to the as-cast H13 steel,the microstructures of the spray-formed H13 steel is characterized by lower bainite,martensite and much more retained austenite,inducing lower hardness than the as-cast H13.The peak aging temperature for the spray-formed H13 steel is Effects of Quenching Rate on the Microstructures and The effects of quenching rate on the microstructures and mechanical properties of the heat treatable Mg-4.2Y-2.3Nd-1.0Gd-0.6Zr (wt.%) (WE43) sand-cast alloy have been studied using a combination of mechanical testing,Vickers hardness testing,optical microscopy (OM) and scanning electron microscope (SEM).Two quenching conditions,either air quenching or 60 Effects of Quenching Medium on the Microstructures and#176;C water quenching,were employed.

Effects of Quenching Rate on the Microstructures and

The effects of quenching rate on the microstructures and mechanical properties of the heat treatable Mg-4.2Y-2.3Nd-1.0Gd-0.6Zr (wt.%) (WE43) sand-cast alloy have been studied using a combination of mechanical testing,Vickers hardness testing,optical microscopy (OM) and scanning electron microscope (SEM).Two quenching conditions,either air quenching or 60 Effects of Quenching Medium on the Microstructures and#176;C water quenching,were employed.Effect of quenching temperature on the microstructure and Sep 13,2019 Effects of Quenching Medium on the Microstructures and#0183;The microstructures of FM and TM are shown in figure 4.Thereinto,the differences of Q30 and Q230 are hard to distinguish only from figures 4(a) and (c).But Q30 has a large amount of block FM and Q230 has some FM and partial TM as shown in higher-magnification images (figures 4(b) and (d)).What is worth noting is that there are much more Effect of quenching medium on microstructure and hardness Jan 01,2017 Effects of Quenching Medium on the Microstructures and#0183;Whereas sintered Fe-Cr-Mo-0.6C alloy resulted in high hardness value than Fe-Mo-0.6C alloy on quenching in water and oil medium,reason being presence of Cr more resist the diffusion of carbon in iron in faster cooling medium resulting in high hardness of sample in water and oil.Molinari et al.analyzed Fe Effects of Quenching Medium on the Microstructures and#226;3Cr Effects of Quenching Medium on the Microstructures and#226;0.5Mo alloy and

Effect of quenching and tempering on microstructure and

While austenitization-quenching leads to a hard martensitic structure with low ductility,tempering restores ductility at the expense of hardness and provides a desired combination of hardness and ductility.Therefore,a sort of parameters in austenitization-quenching and tempering steps affects the mechanical properties.3,4Effect of quenching and tempering on microstructure and Effect of quenching and tempering on microstructure and mechanical properties of 410 and 410 Ni martensitic stainless steels - Volume 32 Issue 3 - Masoud Mirzaee,AmirEffect of Quenching and Heating Temperature on the Effect of Quenching and Heating Temperature on the Microstructure and Mechanical Properties of AISI 1020 Lateef O.Mudashiru,Emmanuel O.Olafimihanand Sunday O.Adetola .Abstract Sample of medium carbon steel AISI 1020 was examined after heattreated at 900 Effects of Quenching Medium on the Microstructures and#186;C in a muffle furnace for 1 hour before quenching in poll -

Effect of Quenching and Heating Temperature on the

Effect of Quenching and Heating Temperature on the Microstructure and Mechanical Properties of AISI 1020 Lateef O.Mudashiru,Emmanuel O.Olafimihanand Sunday O.Adetola .Abstract Sample of medium carbon steel AISI 1020 was examined after heattreated at 900 Effects of Quenching Medium on the Microstructures and#186;C in a muffle furnace for 1 hour before quenching in poll -Effect of Quenching Media on Mechanical Properties for Effect of Quenching Media on Mechanical Properties for Medium Carbon Steel The microstructures obtained were used to explain the results.Samples quenched in distilled water oil and olive oil as quenching media of 0.509Wt%C medium carbon steel was investigated.To compare the effectiveness of the oils,the samples were also quenched in Effect of Cooling Medium and Tempering on Microstructures Annealing and quenching were conducted to study the effect of cooling rate on material.Specimens were heated at 350,400 and 500oC and were cooled by using two types of cooling medium; furnace

Effect of Annealing Processes on Microstructures and

Two annealing processes have been designed to process a medium Mn steel,namely,the traditional direct two-phase annealing process and the pre-quenching treatment before two-phase annealing process,called two stage annealing process.The experimental results indicated that different annealing processes resulted in completely different microstructures,and a significant difference in Effect of Annealing Processes on Microstructures and Effect of Annealing Processes on Microstructures and Mechanical Properties of Medium Mn Steel Two annealing processes have been designed to process a medium Mn steel,namely,the traditional direct two-phase annealing process and the pre-quenching treatment before two-phase annealing process,called two stage annealing process.EFFECT OF QUENCHING MEDIA,SPECIMEN SIZE ANDduring the air quenching process,the cooling rate was quite slow allowing some of the carbon atoms to diffuse at higher rates,and consequently a pearlitic microstructure is achieved which is relatively soft.In contrast to dry air quenching,dissipating heat from the specimen surface to the quenching medium

EFFECT OF QUENCHING MEDIA,SPECIMEN SIZE AND

during the air quenching process,the cooling rate was quite slow allowing some of the carbon atoms to diffuse at higher rates,and consequently a pearlitic microstructure is achieved which is relatively soft.In contrast to dry air quenching,dissipating heat from the specimen surface to the quenching mediumEFFECT OF CARBURIZATION,ON THE MECHANICALEFFECT OF CARBURIZATION,ON THE MECHANICAL PROPERTIES OF EN-8 STEEL IN DIFFERENT QUENCHING MEDIUM,AT DIFFERENT QUENCHING TIME INTERVALS.BSR VENU MADHAV,ABDUL AHAD MOHIUDDIN MOHAMMED ATIFUDDIN The microstructures of all the specimens were studied at both core and case regions were observed at suitableCited by 12Publish Year 2017Author Navid Davari,Atefe Rostami,Seyyed Mahdi AbbasiEffect of Cooling Medium and Tempering on Microstructures Annealing and quenching were conducted to study the effect of cooling rate on material.Specimens were heated at 350,400 and 500oC and were cooled by using two types of cooling medium; furnace

Author Sandeep,Vikas Verma,Ujjwal Prakash,P.C.Tewari,Dinesh KhandujaPublish Year 2017The effects of different quenching mediums on the hardness

The rate of heat extraction,hardness,and severity of quenching steel has been investigated using conventional and nonconventional methods.A variety of steel alloys such as 4140,D2,S7,and O1 were used in the preliminary tests with conventional quenching methods to observe the microstructures and hardness development.Author Rui Dong,Ke Lv,Hui Guo,Ai Min ZhaoPublish Year 2019Effects of Quenching Medium on the Microstructures and The effect of quenching medium on the microstructure and mechanical properties has been investigated for the 42CrMo steel,which is used in a polar crane for the nuclear power station.Experimental results indicates that the microstructure of the air quenched 42CrMo steel is pearlite ,proeutectoid ferrite and a small amount of upper bainite.Author Ruben.Peinado EstradaPublish Year 2019How Quenching Hardens Steel in MetalworkingAug 09,2019 Effects of Quenching Medium on the Microstructures and#0183;How Quenching Is Executed .Common media for quenching include special-purpose polymers,forced air convection,freshwater,saltwater,and oil.Water is an effective medium when the goal is to have the steel to reach maximum hardness.

Author Jun Dan Chen,Shan Ping LuPublish Year 2012Effects of annealing temperature and quenching medium on

Jan 23,2017 Effects of Quenching Medium on the Microstructures and#0183;In this research,the effects of annealing temperature and quenching medium on microstructure,mechanical properties as well as high cycle and low cycle fatigue behavior of Ti-6Al-4V were investigated.Four types of different heat treatments consisting annealing at 930 Effects of Quenching Medium on the Microstructures and#176;C and 970 Effects of Quenching Medium on the Microstructures and#176;C followed by air cooling or water quenching were considered.12345NextEffect of twice quenching and tempering on the mechanical Nov 01,2012 Effects of Quenching Medium on the Microstructures and#0183;The effect of twice quenching and tempering on the mechanical properties and microstructures of SCRAM steel was investigated.The results from tensile tests showed that whether twice quenching and tempering processes(1253 K/0.5 h/W.C(water cool) + 1033 K/2 h/A.C(air cool) + 1233 K/0.5 h/W.C + 1033 K/2 h/A.C named after 2Q2TI,and 1253 K/0.5 h/W.C + 1033 K/2 h/A.C +(PDF) MECHANICAL PROPERTIES AND MICROSTRUCTURESAug 02,2020 Effects of Quenching Medium on the Microstructures and#0183;The effect of cooling rate of cane molasses as quenching medium for 0.61% C high carbon steels was investigated.Samples of high carbon steel were spheroidized annealed and then machined prior to

(PDF) Effect of Heat Treatment on Microstructures and

In this work,the effect of the quenching media (brine,water,and two types of naphthenic mineral oils) and the tempering temperature (200,400,600 C) on the static mechanical properties and (PDF) EFFECT OF DIFFERENT QUENCHING MEDIA ONEffects of various quenching media on the mechanical properties of inter-critically annealed 0.267%C -0.83% Mn steel.International Journal of engineering and advanced technology,3 (6),pp.121-127.

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